JPS6249773B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emergency circuit for a main control room delivery switch system in a broadcasting station.

A main control room switcher system in a broadcasting station is usually configured as shown in FIG. That is, switching control of automatic switchers 3 and 4 is performed by control outputs of automatic program control apparatuses 1 and 2 using computers. In order to prevent delivery accidents, the above device is duplicated. A plurality of video and audio signals a and a' are input to the automatic switchers 3 and 4, respectively. The video and audio signals a and a' may be completely the same signal, or may be partially different signals. Automatic program control device 1
In addition to having a built-in computer and outputting switching control signals to the automatic switcher 3 according to a program, the
It outputs control signals C such as start commands and multiplexer switching for external equipment such as telecine equipment. Of course, the video and audio signals output from these external devices become part of the input signal a to the switcher 3. The same applies to the automatic program control device 2. It also outputs a control command to the transmission switcher 5, and the transmission switcher 5 normally selects the output signal of the automatic switcher 3 and outputs the broadcast program signal b. At present, the automatic program control device 1 and the automatic switcher 3 are the active system, and the automatic program control device 2 and the automatic switcher 4 are the backup system, and the system changeover switch 8 connects the active system. and,
A completely manually controlled emergency circuit (usually referred to as a cut switching circuit) is attached, which is completely unrelated to the above-mentioned automatic control system. Conventionally, this emergency circuit consists of an emergency switcher 7 and a manual control panel 6, and the emergency switcher 7 has a plurality of video and audio signals.
It is manually controlled by inputting ``a'' and pressing the manual button on the manual control panel 6.Video and audio signals
Even if a″ is the same signal as the signals a, a′, etc.,
Some signals may be different. The output signal of the emergency switcher 7 is supplied to the output switcher 5, and is output by manual operation when a trouble occurs in the automatic switch system.

The above-mentioned delivery switcher system will work as long as both of the automatic systems consisting of the active and spare parts fail.
Emergence circuits are never used. However, when an emergency circuit is required, in addition to manual switching control of the emergency switcher, it is generally necessary to start equipment such as a VTR or telecine device, or to have the output switcher selectively output the emergency signal. Many manual operations are required, such as manual operations for For this reason, the operation was complicated, and there was even a risk that the accident would be exacerbated.

The purpose of the present invention is to solve the above-mentioned conventional drawbacks and
The object of the present invention is to provide an emergency circuit that is easy to operate.

The emergency circuit of the present invention includes an automatic program control device that has a built-in computer and sends switching control signals for an automatic switcher and control signals to external devices, and an automatic program control device that inputs a plurality of video and audio signals and outputs the automatic program control device. an automatic switcher that selectively outputs according to a control signal to be input, an emergency switcher that inputs a plurality of video and audio signals and selectively outputs them according to the output of a manual control panel; In a main control room transmission switcher system in a broadcasting station equipped with a manual control panel, the output signal of the manual control panel is input to the automatic program control panel, and the emergency switcher inputs the output signal of the manual control panel to the automatic program control panel. It is characterized in that it operates based on the control signal it outputs.

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 2 is a block diagram showing one embodiment of the present invention, including the above-mentioned automatic control system. However, since the configuration and operation of the automatic control system itself are completely the same as those of the conventional system, a description thereof will be omitted. In this embodiment, the output signal of the manual control panel 6 is once inputted to the automatic program control device 1 or 2 via the system changeover switch 8. Then, the automatic program control device 1 outputs, for example, a start command to the VTR based on the output signal of the manual control panel 6,
After a period of time for the VTR to reach normal rotation, a switching control command is issued to the emergency switcher 7. At this time, the input signal a'' contains the above
Video and audio signals from the VTR are input and selectively output. Further, the transmission switcher 5 switches the cross points according to the control signal from the automatic program control device 1 and selectively outputs the emergency signal. In addition, when using a telecine device for emergency, the automatic program control device 1 identifies it by the output signal of the manual control panel 6, issues a start command to the projector, and reaches normal rotation of the projector. After seconds, a switching control command is sent to the emergency switcher 7. Furthermore, if the manually selected signal material does not require external device control, such as a television camera or Internet input signal, a switching control command is immediately output. Such a determination can be easily made by the computer built into the automatic program control device 1 or 2. Since the audio systems of recent broadcasting stations are audio multiplexed, a mode control command for stereo, bilingual, or monaural audio is also generated at the same time as the switching control command is output to the emergency switcher 7. Of course. In these cases, the transmission switcher 5 is connected to the automatic program control device 1 or 2 in the same manner as described above.
Of course, the emergency signal can be selectively output based on a switching command from the controller.

As described above, in the present invention, it is possible to automatically send out the required emergency backup signal by operating the manual button on the manual control panel 6, which makes the operation easy and reduces the risk of malfunction. do not have. In other words, there is an effect that operations in an emergency can be performed extremely easily and smoothly.

Recent advances in technology have been remarkable, and the equipment that makes up the system is highly reliable.
Because of the multiple systems, it is extremely rare for the active and standby systems of the automatic delivery system to fail at the same time. Rather, the problems are caused by human-caused or force majeure accidents such as mistakes in inputting data into the automatic program control device, mistakes in starting the VTR, and cutting off the film while it is running. The emergency circuit according to the present invention has the effect of easily and smoothly backing up this type of accident.

Note that the output of the manual control panel should not be imported into the current or standby automatic program control device as one of the control data, but instead a program control device (using a microcomputer, etc.) that is dedicated to controlling the emergency switcher may be used. It goes without saying that a separate device may be provided to perform similar control. However, even in this case, it is desirable to inform the automatic control device of the control performed by the dedicated control device in order to restore normal automatic operation after recovery from the accident.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a main control room switch system using a conventional emergency circuit, and FIG. 2 is a block diagram showing an embodiment of the present invention. In the figure, 1, 2... automatic program control device;
3, 4... Automatic switcher, 5... Delivery switcher, 6... Manual control panel, 7... Emergence switcher, 8... System changeover switch, a, a', a''... Connection to each switcher. Input signal, b...broadcast program signal, c...external device control signal.

Claims (1)

[Scope of Claims] 1. An automatic program control device that includes a built-in computer and sends switching control signals for an automatic switcher and control signals to external equipment, and control that inputs a plurality of video and audio signals and outputs them from the automatic program control device. An automatic switcher that selectively outputs based on a signal; an emergency switcher that inputs multiple video and audio signals and selectively outputs based on the output of a manual control panel;
A broadcast station main control room output switch system comprising a manual control panel for switching and controlling the emergence switcher, further comprising: a circuit for inputting an output signal of the manual control panel to the automatic program control device; An emergency circuit characterized in that the emergency switcher is configured to operate in response to a control signal output from the automatic program control device.